Rollout On Knees muscles:Rectus Abdominis, Lower Back, Deltoids auxiliary muscles:Trapezius, Obliques, Pectoralis Major, Teres Muscles, Quadriceps, Serratus Anterior, Latissimus Dorsi required:Dumbbells (2) / Barbell / EZ Bar optional:Fitness Mat fitness level:Hard exercise type:Strength exercise benefits and how to do Rollout On Knees